This is perhaps the best website for So. Calif. Skateparks:
http://www.socalskateparks.com/
Looking at the top 20 list:
The outdoors Etnies and Laguna Niguel skate parks in Orange County are close to me.
David has been to the Vans skatepark and Skatelab...both inside, which he likes.
See the Videos on his website done at these parks.

There's more websites for So. Calif. skateparks and one for No. Calif. (use google)

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